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142 lines
3.2 KiB
Bash
142 lines
3.2 KiB
Bash
# Copyright (C) 2019 OpenWrt.org
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. /lib/functions.sh
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. /lib/functions/system.sh
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caldata_die() {
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echo "caldata: " "$*"
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exit 1
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}
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caldata_extract() {
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local part=$1
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local offset=$(($2))
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local count=$(($3))
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local mtd
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mtd=$(find_mtd_chardev $part)
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[ -n "$mtd" ] || caldata_die "no mtd device found for partition $part"
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dd if=$mtd of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $mtd"
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}
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caldata_extract_ubi() {
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local part=$1
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local offset=$(($2))
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local count=$(($3))
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local ubidev
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local ubi
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. /lib/upgrade/nand.sh
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ubidev=$(nand_find_ubi $CI_UBIPART)
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ubi=$(nand_find_volume $ubidev $part)
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[ -n "$ubi" ] || caldata_die "no UBI volume found for $part"
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dd if=/dev/$ubi of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $ubi"
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}
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caldata_extract_reverse() {
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local part=$1
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local offset=$2
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local count=$(($3))
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local mtd
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local reversed
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local caldata
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mtd=$(find_mtd_chardev "$part")
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reversed=$(hexdump -v -s $offset -n $count -e '/1 "%02x "' $mtd)
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for byte in $reversed; do
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caldata="\x${byte}${caldata}"
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done
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printf "%b" "$caldata" > /lib/firmware/$FIRMWARE
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}
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caldata_from_file() {
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local source=$1
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local offset=$(($2))
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local count=$(($3))
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local target=$4
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[ -n "$target" ] || target=/lib/firmware/$FIRMWARE
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dd if=$source of=$target iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $source"
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}
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caldata_valid() {
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local expected="$1"
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local target=$2
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[ -n "$target" ] || target=/lib/firmware/$FIRMWARE
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magic=$(hexdump -v -n 2 -e '1/1 "%02x"' $target)
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[ "$magic" = "$expected" ]
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return $?
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}
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caldata_patch_chksum() {
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local mac=$1
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local mac_offset=$(($2))
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local chksum_offset=$(($3))
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local target=$4
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local xor_mac
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local xor_fw_mac
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local xor_fw_chksum
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xor_mac=${mac//:/}
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xor_mac="${xor_mac:0:4} ${xor_mac:4:4} ${xor_mac:8:4}"
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xor_fw_mac=$(hexdump -v -n 6 -s $mac_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
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xor_fw_mac="${xor_fw_mac:0:4} ${xor_fw_mac:4:4} ${xor_fw_mac:8:4}"
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xor_fw_chksum=$(hexdump -v -n 2 -s $chksum_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
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xor_fw_chksum=$(xor $xor_fw_chksum $xor_fw_mac $xor_mac)
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printf "%b" "\x${xor_fw_chksum:0:2}\x${xor_fw_chksum:2:2}" | \
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dd of=$target conv=notrunc bs=1 seek=$chksum_offset count=2
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}
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caldata_patch_mac() {
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local mac=$1
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local mac_offset=$(($2))
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local chksum_offset=$3
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local target=$4
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[ -z "$mac" -o -z "$mac_offset" ] && return
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[ -n "$target" ] || target=/lib/firmware/$FIRMWARE
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[ -n "$chksum_offset" ] && caldata_patch_chksum "$mac" "$mac_offset" "$chksum_offset" "$target"
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macaddr_2bin $mac | dd of=$target conv=notrunc oflag=seek_bytes bs=6 seek=$mac_offset count=1 || \
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caldata_die "failed to write MAC address to eeprom file"
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}
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ath9k_patch_mac() {
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local mac=$1
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local target=$2
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caldata_patch_mac "$mac" 0x2 "" "$target"
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}
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ath9k_patch_mac_crc() {
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local mac=$1
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local mac_offset=$2
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local chksum_offset=$((mac_offset - 10))
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local target=$4
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caldata_patch_mac "$mac" "$mac_offset" "$chksum_offset" "$target"
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}
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ath10k_patch_mac() {
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local mac=$1
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local target=$2
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caldata_patch_mac "$mac" 0x6 0x2 "$target"
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}
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